19 files changed, 321 insertions, 253 deletions

diff --git a/kernel/debug/kdb/kdb_debugger.c b/kernel/debug/kdb/kdb_debugger.c
index 8b68ce78ff17..be7b33b73d30 100644
--- a/kernel/debug/kdb/kdb_debugger.c
+++ b/kernel/debug/kdb/kdb_debugger.c
@@ -12,6 +12,7 @@
 #include <linux/kdb.h>
 #include <linux/kdebug.h>
 #include <linux/export.h>
+#include <linux/hardirq.h>
 #include "kdb_private.h"
 #include "../debug_core.h"
 
@@ -52,6 +53,9 @@ int kdb_stub(struct kgdb_state *ks)
         if (atomic_read(&kgdb_setting_breakpoint))
                 reason = KDB_REASON_KEYBOARD;
 
+        if (in_nmi())
+                reason = KDB_REASON_NMI;
+
         for (i = 0, bp = kdb_breakpoints; i < KDB_MAXBPT; i++, bp++) {
                 if ((bp->bp_enabled) && (bp->bp_addr == addr)) {
                         reason = KDB_REASON_BREAK;
diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c
index bb9520f0f6ff..0a69d2adc4f3 100644
--- a/kernel/debug/kdb/kdb_io.c
+++ b/kernel/debug/kdb/kdb_io.c
@@ -715,9 +715,6 @@ kdb_printit:
         /* check for having reached the LINES number of printed lines */
         if (kdb_nextline == linecount) {
                 char buf1[16] = "";
-#if defined(CONFIG_SMP)
-                char buf2[32];
-#endif
 
                 /* Watch out for recursion here.  Any routine that calls
                  * kdb_printf will come back through here.  And kdb_read
@@ -732,14 +729,6 @@ kdb_printit:
                 if (moreprompt == NULL)
                         moreprompt = "more> ";
 
-#if defined(CONFIG_SMP)
-                if (strchr(moreprompt, '%')) {
-                        sprintf(buf2, moreprompt, get_cpu());
-                        put_cpu();
-                        moreprompt = buf2;
-                }
-#endif
-
                 kdb_input_flush();
                 c = console_drivers;
 
diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
index 1f91413edb87..31df1706b9a9 100644
--- a/kernel/debug/kdb/kdb_main.c
+++ b/kernel/debug/kdb/kdb_main.c
@@ -139,11 +139,10 @@ static const int __nkdb_err = sizeof(kdbmsgs) / sizeof(kdbmsg_t);
 static char *__env[] = {
 #if defined(CONFIG_SMP)
  "PROMPT=[%d]kdb> ",
- "MOREPROMPT=[%d]more> ",
 #else
  "PROMPT=kdb> ",
- "MOREPROMPT=more> ",
 #endif
+ "MOREPROMPT=more> ",
  "RADIX=16",
  "MDCOUNT=8",                   /* lines of md output */
  KDB_PLATFORM_ENV,
@@ -1236,18 +1235,6 @@ static int kdb_local(kdb_reason_t reason, int error, struct pt_regs *regs,
                 *cmdbuf = '\0';
                 *(cmd_hist[cmd_head]) = '\0';
 
-                if (KDB_FLAG(ONLY_DO_DUMP)) {
-                        /* kdb is off but a catastrophic error requires a dump.
-                         * Take the dump and reboot.
-                         * Turn on logging so the kdb output appears in the log
-                         * buffer in the dump.
-                         */
-                        const char *setargs[] = { "set", "LOGGING", "1" };
-                        kdb_set(2, setargs);
-                        kdb_reboot(0, NULL);
-                        /*NOTREACHED*/
-                }
-
 do_full_getstr:
 #if defined(CONFIG_SMP)
                 snprintf(kdb_prompt_str, CMD_BUFLEN, kdbgetenv("PROMPT"),
diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c
index 6581a040f399..98d4597f43d6 100644
--- a/kernel/events/callchain.c
+++ b/kernel/events/callchain.c
@@ -153,7 +153,8 @@ put_callchain_entry(int rctx)
         put_recursion_context(__get_cpu_var(callchain_recursion), rctx);
 }
 
-struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
+struct perf_callchain_entry *
+perf_callchain(struct perf_event *event, struct pt_regs *regs)
 {
         int rctx;
         struct perf_callchain_entry *entry;
@@ -178,6 +179,12 @@ struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
         }
 
         if (regs) {
+                /*
+                 * Disallow cross-task user callchains.
+                 */
+                if (event->ctx->task && event->ctx->task != current)
+                        goto exit_put;
+
                 perf_callchain_store(entry, PERF_CONTEXT_USER);
                 perf_callchain_user(entry, regs);
         }
diff --git a/kernel/events/core.c b/kernel/events/core.c
index f1cf0edeb39a..b7935fcec7d9 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -4039,7 +4039,7 @@ void perf_prepare_sample(struct perf_event_header *header,
         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
                 int size = 1;
 
-                data->callchain = perf_callchain(regs);
+                data->callchain = perf_callchain(event, regs);
 
                 if (data->callchain)
                         size += data->callchain->nr;
@@ -5209,7 +5209,8 @@ static int perf_tp_event_match(struct perf_event *event,
 }
 
 void perf_tp_event(u64 addr, u64 count, void *record, int entry_size,
-                   struct pt_regs *regs, struct hlist_head *head, int rctx)
+                   struct pt_regs *regs, struct hlist_head *head, int rctx,
+                   struct task_struct *task)
 {
         struct perf_sample_data data;
         struct perf_event *event;
@@ -5228,6 +5229,31 @@ void perf_tp_event(u64 addr, u64 count, void *record, int entry_size,
                         perf_swevent_event(event, count, &data, regs);
         }
 
+        /*
+         * If we got specified a target task, also iterate its context and
+         * deliver this event there too.
+         */
+        if (task && task != current) {
+                struct perf_event_context *ctx;
+                struct trace_entry *entry = record;
+
+                rcu_read_lock();
+                ctx = rcu_dereference(task->perf_event_ctxp[perf_sw_context]);
+                if (!ctx)
+                        goto unlock;
+
+                list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
+                        if (event->attr.type != PERF_TYPE_TRACEPOINT)
+                                continue;
+                        if (event->attr.config != entry->type)
+                                continue;
+                        if (perf_tp_event_match(event, &data, regs))
+                                perf_swevent_event(event, count, &data, regs);
+                }
+unlock:
+                rcu_read_unlock();
+        }
+
         perf_swevent_put_recursion_context(rctx);
 }
 EXPORT_SYMBOL_GPL(perf_tp_event);
diff --git a/kernel/events/internal.h b/kernel/events/internal.h
index b0b107f90afc..a096c19f2c2a 100644
--- a/kernel/events/internal.h
+++ b/kernel/events/internal.h
@@ -101,7 +101,8 @@ __output_copy(struct perf_output_handle *handle,
 }
 
 /* Callchain handling */
-extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs);
+extern struct perf_callchain_entry *
+perf_callchain(struct perf_event *event, struct pt_regs *regs);
 extern int get_callchain_buffers(void);
 extern void put_callchain_buffers(void);
 
diff --git a/kernel/futex.c b/kernel/futex.c
index e2b0fb9a0b3b..3717e7b306e0 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -2231,11 +2231,11 @@ int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb,
  * @uaddr2:     the pi futex we will take prior to returning to user-space
  *
  * The caller will wait on uaddr and will be requeued by futex_requeue() to
- * uaddr2 which must be PI aware.  Normal wakeup will wake on uaddr2 and
- * complete the acquisition of the rt_mutex prior to returning to userspace.
- * This ensures the rt_mutex maintains an owner when it has waiters; without
- * one, the pi logic wouldn't know which task to boost/deboost, if there was a
- * need to.
+ * uaddr2 which must be PI aware and unique from uaddr.  Normal wakeup will wake
+ * on uaddr2 and complete the acquisition of the rt_mutex prior to returning to
+ * userspace.  This ensures the rt_mutex maintains an owner when it has waiters;
+ * without one, the pi logic would not know which task to boost/deboost, if
+ * there was a need to.
  *
  * We call schedule in futex_wait_queue_me() when we enqueue and return there
  * via the following:
@@ -2272,6 +2272,9 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
         struct futex_q q = futex_q_init;
         int res, ret;
 
+        if (uaddr == uaddr2)
+                return -EINVAL;
+
         if (!bitset)
                 return -EINVAL;
 
@@ -2343,7 +2346,7 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
                  * signal.  futex_unlock_pi() will not destroy the lock_ptr nor
                  * the pi_state.
                  */
-                WARN_ON(!&q.pi_state);
+                WARN_ON(!q.pi_state);
                 pi_mutex = &q.pi_state->pi_mutex;
                 ret = rt_mutex_finish_proxy_lock(pi_mutex, to, &rt_waiter, 1);
                 debug_rt_mutex_free_waiter(&rt_waiter);
@@ -2370,7 +2373,7 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
          * fault, unlock the rt_mutex and return the fault to userspace.
          */
         if (ret == -EFAULT) {
-                if (rt_mutex_owner(pi_mutex) == current)
+                if (pi_mutex && rt_mutex_owner(pi_mutex) == current)
                         rt_mutex_unlock(pi_mutex);
         } else if (ret == -EINTR) {
                 /*
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 0a8e8f059627..4c69326aa773 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -944,6 +944,18 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
         }
 
         /*
+         * Drivers are often written to work w/o knowledge about the
+         * underlying irq chip implementation, so a request for a
+         * threaded irq without a primary hard irq context handler
+         * requires the ONESHOT flag to be set. Some irq chips like
+         * MSI based interrupts are per se one shot safe. Check the
+         * chip flags, so we can avoid the unmask dance at the end of
+         * the threaded handler for those.
+         */
+        if (desc->irq_data.chip->flags & IRQCHIP_ONESHOT_SAFE)
+                new->flags &= ~IRQF_ONESHOT;
+
+        /*
          * The following block of code has to be executed atomically
          */
         raw_spin_lock_irqsave(&desc->lock, flags);
@@ -1017,7 +1029,8 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
                  */
                 new->thread_mask = 1 << ffz(thread_mask);
 
-        } else if (new->handler == irq_default_primary_handler) {
+        } else if (new->handler == irq_default_primary_handler &&
+                   !(desc->irq_data.chip->flags & IRQCHIP_ONESHOT_SAFE)) {
                 /*
                  * The interrupt was requested with handler = NULL, so
                  * we use the default primary handler for it. But it
diff --git a/kernel/printk.c b/kernel/printk.c
index 6a76ab9d4476..66a2ea37b576 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -1034,6 +1034,7 @@ static int syslog_print_all(char __user *buf, int size, bool clear)
                         struct log *msg = log_from_idx(idx);
 
                         len += msg_print_text(msg, prev, true, NULL, 0);
+                        prev = msg->flags;
                         idx = log_next(idx);
                         seq++;
                 }
@@ -1046,6 +1047,7 @@ static int syslog_print_all(char __user *buf, int size, bool clear)
                         struct log *msg = log_from_idx(idx);
 
                         len -= msg_print_text(msg, prev, true, NULL, 0);
+                        prev = msg->flags;
                         idx = log_next(idx);
                         seq++;
                 }
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index d325c4b2dcbb..82ad284f823b 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4340,9 +4340,7 @@ recheck:
          */
         if (unlikely(policy == p->policy && (!rt_policy(policy) ||
                         param->sched_priority == p->rt_priority))) {
-
-                __task_rq_unlock(rq);
-                raw_spin_unlock_irqrestore(&p->pi_lock, flags);
+                task_rq_unlock(rq, p, &flags);
                 return 0;
         }
 
diff --git a/kernel/sched/cpupri.c b/kernel/sched/cpupri.c
index d72586fdf660..23aa789c53ee 100644
--- a/kernel/sched/cpupri.c
+++ b/kernel/sched/cpupri.c
@@ -65,8 +65,8 @@ static int convert_prio(int prio)
 int cpupri_find(struct cpupri *cp, struct task_struct *p,
                 struct cpumask *lowest_mask)
 {
-        int                  idx      = 0;
-        int                  task_pri = convert_prio(p->prio);
+        int idx = 0;
+        int task_pri = convert_prio(p->prio);
 
         if (task_pri >= MAX_RT_PRIO)
                 return 0;
@@ -137,9 +137,9 @@ int cpupri_find(struct cpupri *cp, struct task_struct *p,
  */
 void cpupri_set(struct cpupri *cp, int cpu, int newpri)
 {
-        int                 *currpri = &cp->cpu_to_pri[cpu];
-        int                  oldpri  = *currpri;
-        int                  do_mb = 0;
+        int *currpri = &cp->cpu_to_pri[cpu];
+        int oldpri = *currpri;
+        int do_mb = 0;
 
         newpri = convert_prio(newpri);
 
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 22321db64952..d0cc03b3e70b 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -3069,6 +3069,9 @@ struct lb_env {
         int                     new_dst_cpu;
         enum cpu_idle_type      idle;
         long                    imbalance;
+        /* The set of CPUs under consideration for load-balancing */
+        struct cpumask          *cpus;
+
         unsigned int            flags;
 
         unsigned int            loop;
@@ -3653,8 +3656,7 @@ fix_small_capacity(struct sched_domain *sd, struct sched_group *group)
  */
 static inline void update_sg_lb_stats(struct lb_env *env,
                         struct sched_group *group, int load_idx,
-                        int local_group, const struct cpumask *cpus,
-                        int *balance, struct sg_lb_stats *sgs)
+                        int local_group, int *balance, struct sg_lb_stats *sgs)
 {
         unsigned long nr_running, max_nr_running, min_nr_running;
         unsigned long load, max_cpu_load, min_cpu_load;
@@ -3671,7 +3673,7 @@ static inline void update_sg_lb_stats(struct lb_env *env,
         max_nr_running = 0;
         min_nr_running = ~0UL;
 
-        for_each_cpu_and(i, sched_group_cpus(group), cpus) {
+        for_each_cpu_and(i, sched_group_cpus(group), env->cpus) {
                 struct rq *rq = cpu_rq(i);
 
                 nr_running = rq->nr_running;
@@ -3800,8 +3802,7 @@ static bool update_sd_pick_busiest(struct lb_env *env,
  * @sds: variable to hold the statistics for this sched_domain.
  */
 static inline void update_sd_lb_stats(struct lb_env *env,
-                                      const struct cpumask *cpus,
-                                      int *balance, struct sd_lb_stats *sds)
+                                        int *balance, struct sd_lb_stats *sds)
 {
         struct sched_domain *child = env->sd->child;
         struct sched_group *sg = env->sd->groups;
@@ -3818,8 +3819,7 @@ static inline void update_sd_lb_stats(struct lb_env *env,
 
                 local_group = cpumask_test_cpu(env->dst_cpu, sched_group_cpus(sg));
                 memset(&sgs, 0, sizeof(sgs));
-                update_sg_lb_stats(env, sg, load_idx, local_group,
-                                   cpus, balance, &sgs);
+                update_sg_lb_stats(env, sg, load_idx, local_group, balance, &sgs);
 
                 if (local_group && !(*balance))
                         return;
@@ -4055,7 +4055,6 @@ static inline void calculate_imbalance(struct lb_env *env, struct sd_lb_stats *s
  * to restore balance.
  *
  * @env: The load balancing environment.
- * @cpus: The set of CPUs under consideration for load-balancing.
  * @balance: Pointer to a variable indicating if this_cpu
  *      is the appropriate cpu to perform load balancing at this_level.
  *
@@ -4065,7 +4064,7 @@ static inline void calculate_imbalance(struct lb_env *env, struct sd_lb_stats *s
  *                 put to idle by rebalancing its tasks onto our group.
  */
 static struct sched_group *
-find_busiest_group(struct lb_env *env, const struct cpumask *cpus, int *balance)
+find_busiest_group(struct lb_env *env, int *balance)
 {
         struct sd_lb_stats sds;
 
@@ -4075,7 +4074,7 @@ find_busiest_group(struct lb_env *env, const struct cpumask *cpus, int *balance)
          * Compute the various statistics relavent for load balancing at
          * this level.
          */
-        update_sd_lb_stats(env, cpus, balance, &sds);
+        update_sd_lb_stats(env, balance, &sds);
 
         /*
          * this_cpu is not the appropriate cpu to perform load balancing at
@@ -4155,8 +4154,7 @@ ret:
  * find_busiest_queue - find the busiest runqueue among the cpus in group.
  */
 static struct rq *find_busiest_queue(struct lb_env *env,
-                                     struct sched_group *group,
-                                     const struct cpumask *cpus)
+                                     struct sched_group *group)
 {
         struct rq *busiest = NULL, *rq;
         unsigned long max_load = 0;
@@ -4171,7 +4169,7 @@ static struct rq *find_busiest_queue(struct lb_env *env,
                 if (!capacity)
                         capacity = fix_small_capacity(env->sd, group);
 
-                if (!cpumask_test_cpu(i, cpus))
+                if (!cpumask_test_cpu(i, env->cpus))
                         continue;
 
                 rq = cpu_rq(i);
@@ -4252,6 +4250,7 @@ static int load_balance(int this_cpu, struct rq *this_rq,
                 .dst_grpmask    = sched_group_cpus(sd->groups),
                 .idle           = idle,
                 .loop_break     = sched_nr_migrate_break,
+                .cpus           = cpus,
         };
 
         cpumask_copy(cpus, cpu_active_mask);
@@ -4260,7 +4259,7 @@ static int load_balance(int this_cpu, struct rq *this_rq,
         schedstat_inc(sd, lb_count[idle]);
 
 redo:
-        group = find_busiest_group(&env, cpus, balance);
+        group = find_busiest_group(&env, balance);
 
         if (*balance == 0)
                 goto out_balanced;
@@ -4270,7 +4269,7 @@ redo:
                 goto out_balanced;
         }
 
-        busiest = find_busiest_queue(&env, group, cpus);
+        busiest = find_busiest_queue(&env, group);
         if (!busiest) {
                 schedstat_inc(sd, lb_nobusyq[idle]);
                 goto out_balanced;
diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c
index a470154e0408..46da0537c10b 100644
--- a/kernel/time/jiffies.c
+++ b/kernel/time/jiffies.c
@@ -37,7 +37,7 @@
  * requested HZ value. It is also not recommended
  * for "tick-less" systems.
  */
-#define NSEC_PER_JIFFY  ((u32)((((u64)NSEC_PER_SEC)<<8)/ACTHZ))
+#define NSEC_PER_JIFFY  ((u32)((((u64)NSEC_PER_SEC)<<8)/SHIFTED_HZ))
 
 /* Since jiffies uses a simple NSEC_PER_JIFFY multiplier
  * conversion, the .shift value could be zero. However
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index b7fbadc5c973..24174b4d669b 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -28,7 +28,7 @@ DEFINE_SPINLOCK(ntp_lock);
 /* USER_HZ period (usecs): */
 unsigned long                   tick_usec = TICK_USEC;
 
-/* ACTHZ period (nsecs): */
+/* SHIFTED_HZ period (nsecs): */
 unsigned long                   tick_nsec;
 
 static u64                      tick_length;
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index f045cc50832d..e16af197a2bc 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -65,14 +65,14 @@ struct timekeeper {
          * used instead.
          */
         struct timespec         wall_to_monotonic;
-        /* time spent in suspend */
-        struct timespec         total_sleep_time;
-        /* The raw monotonic time for the CLOCK_MONOTONIC_RAW posix clock. */
-        struct timespec         raw_time;
         /* Offset clock monotonic -> clock realtime */
         ktime_t                 offs_real;
+        /* time spent in suspend */
+        struct timespec         total_sleep_time;
         /* Offset clock monotonic -> clock boottime */
         ktime_t                 offs_boot;
+        /* The raw monotonic time for the CLOCK_MONOTONIC_RAW posix clock. */
+        struct timespec         raw_time;
         /* Seqlock for all timekeeper values */
         seqlock_t               lock;
 };
@@ -108,13 +108,38 @@ static struct timespec tk_xtime(struct timekeeper *tk)
 static void tk_set_xtime(struct timekeeper *tk, const struct timespec *ts)
 {
         tk->xtime_sec = ts->tv_sec;
-        tk->xtime_nsec = ts->tv_nsec << tk->shift;
+        tk->xtime_nsec = (u64)ts->tv_nsec << tk->shift;
 }
 
 static void tk_xtime_add(struct timekeeper *tk, const struct timespec *ts)
 {
         tk->xtime_sec += ts->tv_sec;
-        tk->xtime_nsec += ts->tv_nsec << tk->shift;
+        tk->xtime_nsec += (u64)ts->tv_nsec << tk->shift;
+}
+
+static void tk_set_wall_to_mono(struct timekeeper *tk, struct timespec wtm)
+{
+        struct timespec tmp;
+
+        /*
+         * Verify consistency of: offset_real = -wall_to_monotonic
+         * before modifying anything
+         */
+        set_normalized_timespec(&tmp, -tk->wall_to_monotonic.tv_sec,
+                                        -tk->wall_to_monotonic.tv_nsec);
+        WARN_ON_ONCE(tk->offs_real.tv64 != timespec_to_ktime(tmp).tv64);
+        tk->wall_to_monotonic = wtm;
+        set_normalized_timespec(&tmp, -wtm.tv_sec, -wtm.tv_nsec);
+        tk->offs_real = timespec_to_ktime(tmp);
+}
+
+static void tk_set_sleep_time(struct timekeeper *tk, struct timespec t)
+{
+        /* Verify consistency before modifying */
+        WARN_ON_ONCE(tk->offs_boot.tv64 != timespec_to_ktime(tk->total_sleep_time).tv64);
+
+        tk->total_sleep_time    = t;
+        tk->offs_boot           = timespec_to_ktime(t);
 }
 
 /**
@@ -217,14 +242,6 @@ static inline s64 timekeeping_get_ns_raw(struct timekeeper *tk)
         return nsec + arch_gettimeoffset();
 }
 
-static void update_rt_offset(struct timekeeper *tk)
-{
-        struct timespec tmp, *wtm = &tk->wall_to_monotonic;
-
-        set_normalized_timespec(&tmp, -wtm->tv_sec, -wtm->tv_nsec);
-        tk->offs_real = timespec_to_ktime(tmp);
-}
-
 /* must hold write on timekeeper.lock */
 static void timekeeping_update(struct timekeeper *tk, bool clearntp)
 {
@@ -234,12 +251,10 @@ static void timekeeping_update(struct timekeeper *tk, bool clearntp)
                 tk->ntp_error = 0;
                 ntp_clear();
         }
-        update_rt_offset(tk);
         xt = tk_xtime(tk);
         update_vsyscall(&xt, &tk->wall_to_monotonic, tk->clock, tk->mult);
 }
 
-
 /**
  * timekeeping_forward_now - update clock to the current time
  *
@@ -277,18 +292,19 @@ static void timekeeping_forward_now(struct timekeeper *tk)
  */
 void getnstimeofday(struct timespec *ts)
 {
+        struct timekeeper *tk = &timekeeper;
         unsigned long seq;
         s64 nsecs = 0;
 
         WARN_ON(timekeeping_suspended);
 
         do {
-                seq = read_seqbegin(&timekeeper.lock);
+                seq = read_seqbegin(&tk->lock);
 
-                ts->tv_sec = timekeeper.xtime_sec;
-                ts->tv_nsec = timekeeping_get_ns(&timekeeper);
+                ts->tv_sec = tk->xtime_sec;
+                ts->tv_nsec = timekeeping_get_ns(tk);
 
-        } while (read_seqretry(&timekeeper.lock, seq));
+        } while (read_seqretry(&tk->lock, seq));
 
         timespec_add_ns(ts, nsecs);
 }
@@ -296,19 +312,18 @@ EXPORT_SYMBOL(getnstimeofday);
 
 ktime_t ktime_get(void)
 {
+        struct timekeeper *tk = &timekeeper;
         unsigned int seq;
         s64 secs, nsecs;
 
         WARN_ON(timekeeping_suspended);
 
         do {
-                seq = read_seqbegin(&timekeeper.lock);
-                secs = timekeeper.xtime_sec +
-                                timekeeper.wall_to_monotonic.tv_sec;
-                nsecs = timekeeping_get_ns(&timekeeper) +
-                                timekeeper.wall_to_monotonic.tv_nsec;
+                seq = read_seqbegin(&tk->lock);
+                secs = tk->xtime_sec + tk->wall_to_monotonic.tv_sec;
+                nsecs = timekeeping_get_ns(tk) + tk->wall_to_monotonic.tv_nsec;
 
-        } while (read_seqretry(&timekeeper.lock, seq));
+        } while (read_seqretry(&tk->lock, seq));
         /*
          * Use ktime_set/ktime_add_ns to create a proper ktime on
          * 32-bit architectures without CONFIG_KTIME_SCALAR.
@@ -327,18 +342,19 @@ EXPORT_SYMBOL_GPL(ktime_get);
  */
 void ktime_get_ts(struct timespec *ts)
 {
+        struct timekeeper *tk = &timekeeper;
         struct timespec tomono;
         unsigned int seq;
 
         WARN_ON(timekeeping_suspended);
 
         do {
-                seq = read_seqbegin(&timekeeper.lock);
-                ts->tv_sec = timekeeper.xtime_sec;
-                ts->tv_nsec = timekeeping_get_ns(&timekeeper);
-                tomono = timekeeper.wall_to_monotonic;
+                seq = read_seqbegin(&tk->lock);
+                ts->tv_sec = tk->xtime_sec;
+                ts->tv_nsec = timekeeping_get_ns(tk);
+                tomono = tk->wall_to_monotonic;
 
-        } while (read_seqretry(&timekeeper.lock, seq));
+        } while (read_seqretry(&tk->lock, seq));
 
         set_normalized_timespec(ts, ts->tv_sec + tomono.tv_sec,
                                 ts->tv_nsec + tomono.tv_nsec);
@@ -358,22 +374,23 @@ EXPORT_SYMBOL_GPL(ktime_get_ts);
  */
 void getnstime_raw_and_real(struct timespec *ts_raw, struct timespec *ts_real)
 {
+        struct timekeeper *tk = &timekeeper;
         unsigned long seq;
         s64 nsecs_raw, nsecs_real;
 
         WARN_ON_ONCE(timekeeping_suspended);
 
         do {
-                seq = read_seqbegin(&timekeeper.lock);
+                seq = read_seqbegin(&tk->lock);
 
-                *ts_raw = timekeeper.raw_time;
-                ts_real->tv_sec = timekeeper.xtime_sec;
+                *ts_raw = tk->raw_time;
+                ts_real->tv_sec = tk->xtime_sec;
                 ts_real->tv_nsec = 0;
 
-                nsecs_raw = timekeeping_get_ns_raw(&timekeeper);
-                nsecs_real = timekeeping_get_ns(&timekeeper);
+                nsecs_raw = timekeeping_get_ns_raw(tk);
+                nsecs_real = timekeeping_get_ns(tk);
 
-        } while (read_seqretry(&timekeeper.lock, seq));
+        } while (read_seqretry(&tk->lock, seq));
 
         timespec_add_ns(ts_raw, nsecs_raw);
         timespec_add_ns(ts_real, nsecs_real);
@@ -406,28 +423,28 @@ EXPORT_SYMBOL(do_gettimeofday);
  */
 int do_settimeofday(const struct timespec *tv)
 {
+        struct timekeeper *tk = &timekeeper;
         struct timespec ts_delta, xt;
         unsigned long flags;
 
         if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
                 return -EINVAL;
 
-        write_seqlock_irqsave(&timekeeper.lock, flags);
+        write_seqlock_irqsave(&tk->lock, flags);
 
-        timekeeping_forward_now(&timekeeper);
+        timekeeping_forward_now(tk);
 
-        xt = tk_xtime(&timekeeper);
+        xt = tk_xtime(tk);
         ts_delta.tv_sec = tv->tv_sec - xt.tv_sec;
         ts_delta.tv_nsec = tv->tv_nsec - xt.tv_nsec;
 
-        timekeeper.wall_to_monotonic =
-                        timespec_sub(timekeeper.wall_to_monotonic, ts_delta);
+        tk_set_wall_to_mono(tk, timespec_sub(tk->wall_to_monotonic, ts_delta));
 
-        tk_set_xtime(&timekeeper, tv);
+        tk_set_xtime(tk, tv);
 
-        timekeeping_update(&timekeeper, true);
+        timekeeping_update(tk, true);
 
-        write_sequnlock_irqrestore(&timekeeper.lock, flags);
+        write_sequnlock_irqrestore(&tk->lock, flags);
 
         /* signal hrtimers about time change */
         clock_was_set();
@@ -436,7 +453,6 @@ int do_settimeofday(const struct timespec *tv)
 }
 EXPORT_SYMBOL(do_settimeofday);
 
-
 /**
  * timekeeping_inject_offset - Adds or subtracts from the current time.
  * @tv:         pointer to the timespec variable containing the offset
@@ -445,23 +461,23 @@ EXPORT_SYMBOL(do_settimeofday);
  */
 int timekeeping_inject_offset(struct timespec *ts)
 {
+        struct timekeeper *tk = &timekeeper;
         unsigned long flags;
 
         if ((unsigned long)ts->tv_nsec >= NSEC_PER_SEC)
                 return -EINVAL;
 
-        write_seqlock_irqsave(&timekeeper.lock, flags);
+        write_seqlock_irqsave(&tk->lock, flags);
 
-        timekeeping_forward_now(&timekeeper);
+        timekeeping_forward_now(tk);
 
 
-        tk_xtime_add(&timekeeper, ts);
-        timekeeper.wall_to_monotonic =
-                                timespec_sub(timekeeper.wall_to_monotonic, *ts);
+        tk_xtime_add(tk, ts);
+        tk_set_wall_to_mono(tk, timespec_sub(tk->wall_to_monotonic, *ts));
 
-        timekeeping_update(&timekeeper, true);
+        timekeeping_update(tk, true);
 
-        write_sequnlock_irqrestore(&timekeeper.lock, flags);
+        write_sequnlock_irqrestore(&tk->lock, flags);
 
         /* signal hrtimers about time change */
         clock_was_set();
@@ -477,23 +493,24 @@ EXPORT_SYMBOL(timekeeping_inject_offset);
  */
 static int change_clocksource(void *data)
 {
+        struct timekeeper *tk = &timekeeper;
         struct clocksource *new, *old;
         unsigned long flags;
 
         new = (struct clocksource *) data;
 
-        write_seqlock_irqsave(&timekeeper.lock, flags);
+        write_seqlock_irqsave(&tk->lock, flags);
 
-        timekeeping_forward_now(&timekeeper);
+        timekeeping_forward_now(tk);
         if (!new->enable || new->enable(new) == 0) {
-                old = timekeeper.clock;
-                tk_setup_internals(&timekeeper, new);
+                old = tk->clock;
+                tk_setup_internals(tk, new);
                 if (old->disable)
                         old->disable(old);
         }
-        timekeeping_update(&timekeeper, true);
+        timekeeping_update(tk, true);
 
-        write_sequnlock_irqrestore(&timekeeper.lock, flags);
+        write_sequnlock_irqrestore(&tk->lock, flags);
 
         return 0;
 }
@@ -507,7 +524,9 @@ static int change_clocksource(void *data)
  */
 void timekeeping_notify(struct clocksource *clock)
 {
-        if (timekeeper.clock == clock)
+        struct timekeeper *tk = &timekeeper;
+
+        if (tk->clock == clock)
                 return;
         stop_machine(change_clocksource, clock, NULL);
         tick_clock_notify();
@@ -536,35 +555,36 @@ EXPORT_SYMBOL_GPL(ktime_get_real);
  */
 void getrawmonotonic(struct timespec *ts)
 {
+        struct timekeeper *tk = &timekeeper;
         unsigned long seq;
         s64 nsecs;
 
         do {
-                seq = read_seqbegin(&timekeeper.lock);
-                nsecs = timekeeping_get_ns_raw(&timekeeper);
-                *ts = timekeeper.raw_time;
+                seq = read_seqbegin(&tk->lock);
+                nsecs = timekeeping_get_ns_raw(tk);
+                *ts = tk->raw_time;
 
-        } while (read_seqretry(&timekeeper.lock, seq));
+        } while (read_seqretry(&tk->lock, seq));
 
         timespec_add_ns(ts, nsecs);
 }
 EXPORT_SYMBOL(getrawmonotonic);
 
-
 /**
  * timekeeping_valid_for_hres - Check if timekeeping is suitable for hres
  */
 int timekeeping_valid_for_hres(void)
 {
+        struct timekeeper *tk = &timekeeper;
         unsigned long seq;
         int ret;
 
         do {
-                seq = read_seqbegin(&timekeeper.lock);
+                seq = read_seqbegin(&tk->lock);
 
-                ret = timekeeper.clock->flags & CLOCK_SOURCE_VALID_FOR_HRES;
+                ret = tk->clock->flags & CLOCK_SOURCE_VALID_FOR_HRES;
 
-        } while (read_seqretry(&timekeeper.lock, seq));
+        } while (read_seqretry(&tk->lock, seq));
 
         return ret;
 }
@@ -574,15 +594,16 @@ int timekeeping_valid_for_hres(void)
  */
 u64 timekeeping_max_deferment(void)
 {
+        struct timekeeper *tk = &timekeeper;
         unsigned long seq;
         u64 ret;
 
         do {
-                seq = read_seqbegin(&timekeeper.lock);
+                seq = read_seqbegin(&tk->lock);
 
-                ret = timekeeper.clock->max_idle_ns;
+                ret = tk->clock->max_idle_ns;
 
-        } while (read_seqretry(&timekeeper.lock, seq));
+        } while (read_seqretry(&tk->lock, seq));
 
         return ret;
 }
@@ -622,46 +643,43 @@ void __attribute__((weak)) read_boot_clock(struct timespec *ts)
  */
 void __init timekeeping_init(void)
 {
+        struct timekeeper *tk = &timekeeper;
         struct clocksource *clock;
         unsigned long flags;
-        struct timespec now, boot;
+        struct timespec now, boot, tmp;
 
         read_persistent_clock(&now);
         read_boot_clock(&boot);
 
-        seqlock_init(&timekeeper.lock);
+        seqlock_init(&tk->lock);
 
         ntp_init();
 
-        write_seqlock_irqsave(&timekeeper.lock, flags);
+        write_seqlock_irqsave(&tk->lock, flags);
         clock = clocksource_default_clock();
         if (clock->enable)
                 clock->enable(clock);
-        tk_setup_internals(&timekeeper, clock);
+        tk_setup_internals(tk, clock);
 
-        tk_set_xtime(&timekeeper, &now);
-        timekeeper.raw_time.tv_sec = 0;
-        timekeeper.raw_time.tv_nsec = 0;
+        tk_set_xtime(tk, &now);
+        tk->raw_time.tv_sec = 0;
+        tk->raw_time.tv_nsec = 0;
         if (boot.tv_sec == 0 && boot.tv_nsec == 0)
-                boot = tk_xtime(&timekeeper);
-
-        set_normalized_timespec(&timekeeper.wall_to_monotonic,
-                                -boot.tv_sec, -boot.tv_nsec);
-        update_rt_offset(&timekeeper);
-        timekeeper.total_sleep_time.tv_sec = 0;
-        timekeeper.total_sleep_time.tv_nsec = 0;
-        write_sequnlock_irqrestore(&timekeeper.lock, flags);
+                boot = tk_xtime(tk);
+
+        set_normalized_timespec(&tmp, -boot.tv_sec, -boot.tv_nsec);
+        tk_set_wall_to_mono(tk, tmp);
+
+        tmp.tv_sec = 0;
+        tmp.tv_nsec = 0;
+        tk_set_sleep_time(tk, tmp);
+
+        write_sequnlock_irqrestore(&tk->lock, flags);
 }
 
 /* time in seconds when suspend began */
 static struct timespec timekeeping_suspend_time;
 
-static void update_sleep_time(struct timespec t)
-{
-        timekeeper.total_sleep_time = t;
-        timekeeper.offs_boot = timespec_to_ktime(t);
-}
-
 /**
  * __timekeeping_inject_sleeptime - Internal function to add sleep interval
  * @delta: pointer to a timespec delta value
@@ -677,13 +695,11 @@ static void __timekeeping_inject_sleeptime(struct timekeeper *tk,
                                         "sleep delta value!\n");
                 return;
         }
-
         tk_xtime_add(tk, delta);
-        tk->wall_to_monotonic = timespec_sub(tk->wall_to_monotonic, *delta);
-        update_sleep_time(timespec_add(tk->total_sleep_time, *delta));
+        tk_set_wall_to_mono(tk, timespec_sub(tk->wall_to_monotonic, *delta));
+        tk_set_sleep_time(tk, timespec_add(tk->total_sleep_time, *delta));
 }
 
-
 /**
  * timekeeping_inject_sleeptime - Adds suspend interval to timeekeeping values
  * @delta: pointer to a timespec delta value
@@ -696,6 +712,7 @@ static void __timekeeping_inject_sleeptime(struct timekeeper *tk,
  */
 void timekeeping_inject_sleeptime(struct timespec *delta)
 {
+        struct timekeeper *tk = &timekeeper;
         unsigned long flags;
         struct timespec ts;
 
@@ -704,21 +721,20 @@ void timekeeping_inject_sleeptime(struct timespec *delta)
         if (!(ts.tv_sec == 0 && ts.tv_nsec == 0))
                 return;
 
-        write_seqlock_irqsave(&timekeeper.lock, flags);
+        write_seqlock_irqsave(&tk->lock, flags);
 
-        timekeeping_forward_now(&timekeeper);
+        timekeeping_forward_now(tk);
 
-        __timekeeping_inject_sleeptime(&timekeeper, delta);
+        __timekeeping_inject_sleeptime(tk, delta);
 
-        timekeeping_update(&timekeeper, true);
+        timekeeping_update(tk, true);
 
-        write_sequnlock_irqrestore(&timekeeper.lock, flags);
+        write_sequnlock_irqrestore(&tk->lock, flags);
 
         /* signal hrtimers about time change */
         clock_was_set();
 }
 
-
 /**
  * timekeeping_resume - Resumes the generic timekeeping subsystem.
  *
@@ -728,6 +744,7 @@ void timekeeping_inject_sleeptime(struct timespec *delta)
  */
 static void timekeeping_resume(void)
 {
+        struct timekeeper *tk = &timekeeper;
         unsigned long flags;
         struct timespec ts;
 
@@ -735,18 +752,18 @@ static void timekeeping_resume(void)
 
         clocksource_resume();
 
-        write_seqlock_irqsave(&timekeeper.lock, flags);
+        write_seqlock_irqsave(&tk->lock, flags);
 
         if (timespec_compare(&ts, &timekeeping_suspend_time) > 0) {
                 ts = timespec_sub(ts, timekeeping_suspend_time);
-                __timekeeping_inject_sleeptime(&timekeeper, &ts);
+                __timekeeping_inject_sleeptime(tk, &ts);
         }
         /* re-base the last cycle value */
-        timekeeper.clock->cycle_last = timekeeper.clock->read(timekeeper.clock);
-        timekeeper.ntp_error = 0;
+        tk->clock->cycle_last = tk->clock->read(tk->clock);
+        tk->ntp_error = 0;
         timekeeping_suspended = 0;
-        timekeeping_update(&timekeeper, false);
-        write_sequnlock_irqrestore(&timekeeper.lock, flags);
+        timekeeping_update(tk, false);
+        write_sequnlock_irqrestore(&tk->lock, flags);
 
         touch_softlockup_watchdog();
 
@@ -758,14 +775,15 @@ static void timekeeping_resume(void)
 
 static int timekeeping_suspend(void)
 {
+        struct timekeeper *tk = &timekeeper;
         unsigned long flags;
         struct timespec         delta, delta_delta;
         static struct timespec  old_delta;
 
         read_persistent_clock(&timekeeping_suspend_time);
 
-        write_seqlock_irqsave(&timekeeper.lock, flags);
-        timekeeping_forward_now(&timekeeper);
+        write_seqlock_irqsave(&tk->lock, flags);
+        timekeeping_forward_now(tk);
         timekeeping_suspended = 1;
 
         /*
@@ -774,7 +792,7 @@ static int timekeeping_suspend(void)
          * try to compensate so the difference in system time
          * and persistent_clock time stays close to constant.
          */
-        delta = timespec_sub(tk_xtime(&timekeeper), timekeeping_suspend_time);
+        delta = timespec_sub(tk_xtime(tk), timekeeping_suspend_time);
         delta_delta = timespec_sub(delta, old_delta);
         if (abs(delta_delta.tv_sec)  >= 2) {
                 /*
@@ -787,7 +805,7 @@ static int timekeeping_suspend(void)
                 timekeeping_suspend_time =
                         timespec_add(timekeeping_suspend_time, delta_delta);
         }
-        write_sequnlock_irqrestore(&timekeeper.lock, flags);
+        write_sequnlock_irqrestore(&tk->lock, flags);
 
         clockevents_notify(CLOCK_EVT_NOTIFY_SUSPEND, NULL);
         clocksource_suspend();
@@ -898,27 +916,29 @@ static void timekeeping_adjust(struct timekeeper *tk, s64 offset)
                  * the error. This causes the likely below to be unlikely.
                  *
                  * The proper fix is to avoid rounding up by using
-                 * the high precision timekeeper.xtime_nsec instead of
+                 * the high precision tk->xtime_nsec instead of
                  * xtime.tv_nsec everywhere. Fixing this will take some
                  * time.
                  */
                 if (likely(error <= interval))
                         adj = 1;
                 else
-                        adj = timekeeping_bigadjust(tk, error, &interval,
-                                                        &offset);
-        } else if (error < -interval) {
-                /* See comment above, this is just switched for the negative */
-                error >>= 2;
-                if (likely(error >= -interval)) {
-                        adj = -1;
-                        interval = -interval;
-                        offset = -offset;
-                } else
-                        adj = timekeeping_bigadjust(tk, error, &interval,
-                                                        &offset);
-        } else
-                return;
+                        adj = timekeeping_bigadjust(tk, error, &interval, &offset);
+        } else {
+                if (error < -interval) {
+                        /* See comment above, this is just switched for the negative */
+                        error >>= 2;
+                        if (likely(error >= -interval)) {
+                                adj = -1;
+                                interval = -interval;
+                                offset = -offset;
+                        } else {
+                                adj = timekeeping_bigadjust(tk, error, &interval, &offset);
+                        }
+                } else {
+                        goto out_adjust;
+                }
+        }
 
         if (unlikely(tk->clock->maxadj &&
                 (tk->mult + adj > tk->clock->mult + tk->clock->maxadj))) {
@@ -981,6 +1001,7 @@ static void timekeeping_adjust(struct timekeeper *tk, s64 offset)
         tk->xtime_nsec -= offset;
         tk->ntp_error -= (interval - offset) << tk->ntp_error_shift;
 
+out_adjust:
         /*
          * It may be possible that when we entered this function, xtime_nsec
          * was very small.  Further, if we're slightly speeding the clocksource
@@ -1003,7 +1024,6 @@ static void timekeeping_adjust(struct timekeeper *tk, s64 offset)
 
 }
 
-
 /**
  * accumulate_nsecs_to_secs - Accumulates nsecs into secs
  *
@@ -1024,15 +1044,21 @@ static inline void accumulate_nsecs_to_secs(struct timekeeper *tk)
 
                 /* Figure out if its a leap sec and apply if needed */
                 leap = second_overflow(tk->xtime_sec);
-                tk->xtime_sec += leap;
-                tk->wall_to_monotonic.tv_sec -= leap;
-                if (leap)
-                        clock_was_set_delayed();
+                if (unlikely(leap)) {
+                        struct timespec ts;
+
+                        tk->xtime_sec += leap;
+
+                        ts.tv_sec = leap;
+                        ts.tv_nsec = 0;
+                        tk_set_wall_to_mono(tk,
+                                timespec_sub(tk->wall_to_monotonic, ts));
 
+                        clock_was_set_delayed();
+                }
         }
 }
 
-
 /**
  * logarithmic_accumulation - shifted accumulation of cycles
  *
@@ -1076,7 +1102,6 @@ static cycle_t logarithmic_accumulation(struct timekeeper *tk, cycle_t offset,
         return offset;
 }
 
-
 /**
  * update_wall_time - Uses the current clocksource to increment the wall time
  *
@@ -1084,21 +1109,22 @@ static cycle_t logarithmic_accumulation(struct timekeeper *tk, cycle_t offset,
 static void update_wall_time(void)
 {
         struct clocksource *clock;
+        struct timekeeper *tk = &timekeeper;
         cycle_t offset;
         int shift = 0, maxshift;
         unsigned long flags;
         s64 remainder;
 
-        write_seqlock_irqsave(&timekeeper.lock, flags);
+        write_seqlock_irqsave(&tk->lock, flags);
 
         /* Make sure we're fully resumed: */
         if (unlikely(timekeeping_suspended))
                 goto out;
 
-        clock = timekeeper.clock;
+        clock = tk->clock;
 
 #ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
-        offset = timekeeper.cycle_interval;
+        offset = tk->cycle_interval;
 #else
         offset = (clock->read(clock) - clock->cycle_last) & clock->mask;
 #endif
@@ -1111,19 +1137,19 @@ static void update_wall_time(void)
          * chunk in one go, and then try to consume the next smaller
          * doubled multiple.
          */
-        shift = ilog2(offset) - ilog2(timekeeper.cycle_interval);
+        shift = ilog2(offset) - ilog2(tk->cycle_interval);
         shift = max(0, shift);
         /* Bound shift to one less than what overflows tick_length */
         maxshift = (64 - (ilog2(ntp_tick_length())+1)) - 1;
         shift = min(shift, maxshift);
-        while (offset >= timekeeper.cycle_interval) {
-                offset = logarithmic_accumulation(&timekeeper, offset, shift);
-                if(offset < timekeeper.cycle_interval<<shift)
+        while (offset >= tk->cycle_interval) {
+                offset = logarithmic_accumulation(tk, offset, shift);
+                if (offset < tk->cycle_interval<<shift)
                         shift--;
         }
 
         /* correct the clock when NTP error is too big */
-        timekeeping_adjust(&timekeeper, offset);
+        timekeeping_adjust(tk, offset);
 
 
         /*
@@ -1135,21 +1161,21 @@ static void update_wall_time(void)
         * the vsyscall implementations are converted to use xtime_nsec
         * (shifted nanoseconds), this can be killed.
         */
-        remainder = timekeeper.xtime_nsec & ((1 << timekeeper.shift) - 1);
-        timekeeper.xtime_nsec -= remainder;
-        timekeeper.xtime_nsec += 1 << timekeeper.shift;
-        timekeeper.ntp_error += remainder << timekeeper.ntp_error_shift;
+        remainder = tk->xtime_nsec & ((1 << tk->shift) - 1);
+        tk->xtime_nsec -= remainder;
+        tk->xtime_nsec += 1 << tk->shift;
+        tk->ntp_error += remainder << tk->ntp_error_shift;
 
         /*
          * Finally, make sure that after the rounding
          * xtime_nsec isn't larger than NSEC_PER_SEC
          */
-        accumulate_nsecs_to_secs(&timekeeper);
+        accumulate_nsecs_to_secs(tk);
 
-        timekeeping_update(&timekeeper, false);
+        timekeeping_update(tk, false);
 
 out:
-        write_sequnlock_irqrestore(&timekeeper.lock, flags);
+        write_sequnlock_irqrestore(&tk->lock, flags);
 
 }
 
@@ -1166,18 +1192,18 @@ out:
  */
 void getboottime(struct timespec *ts)
 {
+        struct timekeeper *tk = &timekeeper;
         struct timespec boottime = {
-                .tv_sec = timekeeper.wall_to_monotonic.tv_sec +
-                                timekeeper.total_sleep_time.tv_sec,
-                .tv_nsec = timekeeper.wall_to_monotonic.tv_nsec +
-                                timekeeper.total_sleep_time.tv_nsec
+                .tv_sec = tk->wall_to_monotonic.tv_sec +
+                                tk->total_sleep_time.tv_sec,
+                .tv_nsec = tk->wall_to_monotonic.tv_nsec +
+                                tk->total_sleep_time.tv_nsec
         };
 
         set_normalized_timespec(ts, -boottime.tv_sec, -boottime.tv_nsec);
 }
 EXPORT_SYMBOL_GPL(getboottime);
 
-
 /**
  * get_monotonic_boottime - Returns monotonic time since boot
  * @ts:         pointer to the timespec to be set
@@ -1189,19 +1215,20 @@ EXPORT_SYMBOL_GPL(getboottime);
  */
 void get_monotonic_boottime(struct timespec *ts)
 {
+        struct timekeeper *tk = &timekeeper;
         struct timespec tomono, sleep;
         unsigned int seq;
 
         WARN_ON(timekeeping_suspended);
 
         do {
-                seq = read_seqbegin(&timekeeper.lock);
-                ts->tv_sec = timekeeper.xtime_sec;
-                ts->tv_nsec = timekeeping_get_ns(&timekeeper);
-                tomono = timekeeper.wall_to_monotonic;
-                sleep = timekeeper.total_sleep_time;
+                seq = read_seqbegin(&tk->lock);
+                ts->tv_sec = tk->xtime_sec;
+                ts->tv_nsec = timekeeping_get_ns(tk);
+                tomono = tk->wall_to_monotonic;
+                sleep = tk->total_sleep_time;
 
-        } while (read_seqretry(&timekeeper.lock, seq));
+        } while (read_seqretry(&tk->lock, seq));
 
         set_normalized_timespec(ts, ts->tv_sec + tomono.tv_sec + sleep.tv_sec,
                         ts->tv_nsec + tomono.tv_nsec + sleep.tv_nsec);
@@ -1231,31 +1258,38 @@ EXPORT_SYMBOL_GPL(ktime_get_boottime);
  */
 void monotonic_to_bootbased(struct timespec *ts)
 {
-        *ts = timespec_add(*ts, timekeeper.total_sleep_time);
+        struct timekeeper *tk = &timekeeper;
+
+        *ts = timespec_add(*ts, tk->total_sleep_time);
 }
 EXPORT_SYMBOL_GPL(monotonic_to_bootbased);
 
 unsigned long get_seconds(void)
 {
-        return timekeeper.xtime_sec;
+        struct timekeeper *tk = &timekeeper;
+
+        return tk->xtime_sec;
 }
 EXPORT_SYMBOL(get_seconds);
 
 struct timespec __current_kernel_time(void)
 {
-        return tk_xtime(&timekeeper);
+        struct timekeeper *tk = &timekeeper;
+
+        return tk_xtime(tk);
 }
 
 struct timespec current_kernel_time(void)
 {
+        struct timekeeper *tk = &timekeeper;
         struct timespec now;
         unsigned long seq;
 
         do {
-                seq = read_seqbegin(&timekeeper.lock);
+                seq = read_seqbegin(&tk->lock);
 
-                now = tk_xtime(&timekeeper);
-        } while (read_seqretry(&timekeeper.lock, seq));
+                now = tk_xtime(tk);
+        } while (read_seqretry(&tk->lock, seq));
 
         return now;
 }
@@ -1263,15 +1297,16 @@ EXPORT_SYMBOL(current_kernel_time);
 
 struct timespec get_monotonic_coarse(void)
 {
+        struct timekeeper *tk = &timekeeper;
         struct timespec now, mono;
         unsigned long seq;
 
         do {
-                seq = read_seqbegin(&timekeeper.lock);
+                seq = read_seqbegin(&tk->lock);
 
-                now = tk_xtime(&timekeeper);
-                mono = timekeeper.wall_to_monotonic;
-        } while (read_seqretry(&timekeeper.lock, seq));
+                now = tk_xtime(tk);
+                mono = tk->wall_to_monotonic;
+        } while (read_seqretry(&tk->lock, seq));
 
         set_normalized_timespec(&now, now.tv_sec + mono.tv_sec,
                                 now.tv_nsec + mono.tv_nsec);
@@ -1300,14 +1335,15 @@ void do_timer(unsigned long ticks)
 void get_xtime_and_monotonic_and_sleep_offset(struct timespec *xtim,
                                 struct timespec *wtom, struct timespec *sleep)
 {
+        struct timekeeper *tk = &timekeeper;
         unsigned long seq;
 
         do {
-                seq = read_seqbegin(&timekeeper.lock);
-                *xtim = tk_xtime(&timekeeper);
-                *wtom = timekeeper.wall_to_monotonic;
-                *sleep = timekeeper.total_sleep_time;
-        } while (read_seqretry(&timekeeper.lock, seq));
+                seq = read_seqbegin(&tk->lock);
+                *xtim = tk_xtime(tk);
+                *wtom = tk->wall_to_monotonic;
+                *sleep = tk->total_sleep_time;
+        } while (read_seqretry(&tk->lock, seq));
 }
 
 #ifdef CONFIG_HIGH_RES_TIMERS
@@ -1321,19 +1357,20 @@ void get_xtime_and_monotonic_and_sleep_offset(struct timespec *xtim,
  */
 ktime_t ktime_get_update_offsets(ktime_t *offs_real, ktime_t *offs_boot)
 {
+        struct timekeeper *tk = &timekeeper;
         ktime_t now;
         unsigned int seq;
         u64 secs, nsecs;
 
         do {
-                seq = read_seqbegin(&timekeeper.lock);
+                seq = read_seqbegin(&tk->lock);
 
-                secs = timekeeper.xtime_sec;
-                nsecs = timekeeping_get_ns(&timekeeper);
+                secs = tk->xtime_sec;
+                nsecs = timekeeping_get_ns(tk);
 
-                *offs_real = timekeeper.offs_real;
-                *offs_boot = timekeeper.offs_boot;
-        } while (read_seqretry(&timekeeper.lock, seq));
+                *offs_real = tk->offs_real;
+                *offs_boot = tk->offs_boot;
+        } while (read_seqretry(&tk->lock, seq));
 
         now = ktime_add_ns(ktime_set(secs, 0), nsecs);
         now = ktime_sub(now, *offs_real);
@@ -1346,19 +1383,19 @@ ktime_t ktime_get_update_offsets(ktime_t *offs_real, ktime_t *offs_boot)
  */
 ktime_t ktime_get_monotonic_offset(void)
 {
+        struct timekeeper *tk = &timekeeper;
         unsigned long seq;
         struct timespec wtom;
 
         do {
-                seq = read_seqbegin(&timekeeper.lock);
-                wtom = timekeeper.wall_to_monotonic;
-        } while (read_seqretry(&timekeeper.lock, seq));
+                seq = read_seqbegin(&tk->lock);
+                wtom = tk->wall_to_monotonic;
+        } while (read_seqretry(&tk->lock, seq));
 
         return timespec_to_ktime(wtom);
 }
 EXPORT_SYMBOL_GPL(ktime_get_monotonic_offset);
 
-
 /**
  * xtime_update() - advances the timekeeping infrastructure
  * @ticks:      number of ticks, that have elapsed since the last call.
diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c
index fee3752ae8f6..8a6d2ee2086c 100644
--- a/kernel/trace/trace_event_perf.c
+++ b/kernel/trace/trace_event_perf.c
@@ -281,7 +281,7 @@ perf_ftrace_function_call(unsigned long ip, unsigned long parent_ip)
 
         head = this_cpu_ptr(event_function.perf_events);
         perf_trace_buf_submit(entry, ENTRY_SIZE, rctx, 0,
-                              1, &regs, head);
+                              1, &regs, head, NULL);
 
 #undef ENTRY_SIZE
 }
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index b31d3d5699fe..1a2117043bb1 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -1002,7 +1002,8 @@ static __kprobes void kprobe_perf_func(struct kprobe *kp,
         store_trace_args(sizeof(*entry), tp, regs, (u8 *)&entry[1], dsize);
 
         head = this_cpu_ptr(call->perf_events);
-        perf_trace_buf_submit(entry, size, rctx, entry->ip, 1, regs, head);
+        perf_trace_buf_submit(entry, size, rctx,
+                                        entry->ip, 1, regs, head, NULL);
 }
 
 /* Kretprobe profile handler */
@@ -1033,7 +1034,8 @@ static __kprobes void kretprobe_perf_func(struct kretprobe_instance *ri,
         store_trace_args(sizeof(*entry), tp, regs, (u8 *)&entry[1], dsize);
 
         head = this_cpu_ptr(call->perf_events);
-        perf_trace_buf_submit(entry, size, rctx, entry->ret_ip, 1, regs, head);
+        perf_trace_buf_submit(entry, size, rctx,
+                                        entry->ret_ip, 1, regs, head, NULL);
 }
 #endif  /* CONFIG_PERF_EVENTS */
 
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index 96fc73369099..60e4d7875672 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -532,7 +532,7 @@ static void perf_syscall_enter(void *ignore, struct pt_regs *regs, long id)
                                (unsigned long *)&rec->args);
 
         head = this_cpu_ptr(sys_data->enter_event->perf_events);
-        perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head);
+        perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head, NULL);
 }
 
 int perf_sysenter_enable(struct ftrace_event_call *call)
@@ -608,7 +608,7 @@ static void perf_syscall_exit(void *ignore, struct pt_regs *regs, long ret)
         rec->ret = syscall_get_return_value(current, regs);
 
         head = this_cpu_ptr(sys_data->exit_event->perf_events);
-        perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head);
+        perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head, NULL);
 }
 
 int perf_sysexit_enable(struct ftrace_event_call *call)
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index 2b36ac68549e..03003cd7dd96 100644
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -670,7 +670,7 @@ static void uprobe_perf_func(struct trace_uprobe *tu, struct pt_regs *regs)
                 call_fetch(&tu->args[i].fetch, regs, data + tu->args[i].offset);
 
         head = this_cpu_ptr(call->perf_events);
-        perf_trace_buf_submit(entry, size, rctx, entry->ip, 1, regs, head);
+        perf_trace_buf_submit(entry, size, rctx, entry->ip, 1, regs, head, NULL);
 
  out:
         preempt_enable();